[144] The Southern Company SEC Filing

Rhea-AI Filing Summary

The Southern Company (SO) filed a Form 144 indicating that an affiliate intends to sell up to 13,158 common shares through Merrill Lynch, Atlanta. At the most recent market price used in the notice, the shares have an aggregate value of ≈ $1.25 million. The proposed transaction represents a negligible 0.001 % of the company’s 1.10 billion shares outstanding and is scheduled on or about 07/21/2025 on the New York Stock Exchange.

The shares were acquired on 02/13/2022 via a performance stock-unit vesting and are being sold for the filer’s own account; no sales were made in the preceding three months. The filer affirms no undisclosed material adverse information about Southern Company and makes the customary Rule 10b5-1 representation.

Positive

• None.

Negative

• Insider intends to sell $1.25 M in shares, which, while small, may be interpreted by some investors as a modest negative insider-sentiment signal.

Insights

Insider-Trading Analyst

TL;DR: Small insider sale (13k shares, $1.25 M) is immaterial to SO’s float; signals routine liquidity, not strategic shift.

The filing discloses an intended disposition worth roughly one-tenth of one percent of average daily SO trading volume and an even smaller fraction of shares outstanding. Because the stock originated from a 2022 performance-unit vest, the sale likely reflects ordinary portfolio diversification or tax planning rather than negative insight. No prior 3-month sales and the standard 10b5-1 affirmation further reduce governance risk. From a valuation or liquidity standpoint, the event is not impactful to corporate fundamentals, but investors tracking insider sentiment may view it as a mildly negative datapoint.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
COMMON	MERRILL LYNCH 3455 PEACHTREE RD NE SUITE 1000 ATLANTA GA 30326	13158	1250010.00	1099055064	07/21/2025	NEW YORK

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
COMMON	02/13/2022	PERFORMANCE STOCK UNIT VEST	THE SOUTHERN COMPANY			13158	02/13/2022	COMPENSATORY PAYMENT

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many Southern Company (SO) shares are being sold under this Form 144?

The notice covers 13,158 common shares.

What is the estimated dollar value of the proposed SO share sale?

The filer lists an aggregate market value of approximately $1.25 million.

When is the planned sale date for the Southern Company shares?

The approximate sale date disclosed is 07/21/2025.

What percentage of SO’s outstanding shares does this sale represent?

About 0.001 % of the 1.10 billion shares outstanding.

How were the shares originally acquired?

They were received on 02/13/2022 through a performance stock-unit vesting transaction.

Was any stock sold by this insider in the past three months?

No. The filing states "Nothing to Report" for prior 3-month sales.